RFR: 8300806: Update googletest to v1.13.0 [v4]

Wed Jan 25 18:27:45 UTC 2023

On Wed, 25 Jan 2023 18:19:44 GMT, Erik Joelsson <erikj at openjdk.org> wrote:

>> Mikael Vidstedt has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Update building docs to reflect new minimum gtest requirement
>
> Marked as reviewed by erikj (Reviewer).

Thank you @erikj79 & @magicus!

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PR: https://git.openjdk.org/jdk/pull/12125